Adaptor-ring assembly for pipe-to-plate joint



United fitates Patent ADAPTOR-RING ASSEMBLY FOR PlPE-TO-PLATE JOINT OttoL. Lagervall, Yakima, Wash.

Original application March 31, 1950, Serial No. 153,215,

now Patent No. 2,710,761, dated June 14, 1955. Divided and thisapplication January 25, 1955, Serial No. 484,021

1 Claim. (Cl. 285-159) This invention relates to an adaptor-ringassembly and has for one of its objects the production of a simple andeflicient means for holding thin-walled tubes to bases, or

other flat surfaces, without the necessity for cutting threads in thetubes, the present application constituting a divisional application ofmy patent issued June 14, 1955, #2,710,761, relating to an adaptor ring.

A further objects of this invention is the production of an adaptor-ringassembly which is so constructed as to permit the passing of a cable orthe like, through a hollow pull-down bolt and a wedge nut which secure atube or pipe to an apertured plate or base.

Other objects and advantages of the invention will appear throughout thefol-lowing specification and claim.

In the drawing:

Figure 1 is a vertical sectional view of the adaptor, certain partsbeing shown in elevation;

Figure 2 is a top plan view of the cup-washer;

Figure 3 is a bottom plan view of the hollow pull-down bolt.

By referring to the drawing in detail, it will be seen that designates abase or support having a suitable aperture 11. An adaptor ring 12 iscarried by the base or support 10 and is provided with an abutmentshoulder 13 which fits snugly against a face 14 of the base or support10, and overhangs the aperture 11, as shown in Figure 1. The ring 12 isprovided with an inset annular depending portion 15 which fits into theaperture 11. An internally threaded filler plug or wedge nut 16 having atapering outer wall or face 17 fits snugly within a tapered end 18 of athin-walled pipe 19. The tapered end 18 fits snugly against a taperingwall 20 of the ring 12.

A hollow pull-down bolt 21 extends through a rigid, hard-metal, shallow,flat-body cup-washer 22, which. washer is provided with a right-angularinturned flange 22, which flange encases the annular depending portion15 and abuts an inset face 23 of the base or support 10 defining asocket adjacent the aperture 11 thereof. The bolt 21 fits wholly withinsaid socket to shield the bolt 21 against injury from foreign objects.The bolt 21 is provided with a hollow body portion 24, as shown inFigure 5 1, and is also provided with a suitable head 25, which headabuts the washer 22 and overhangs the inturned flange 22 The hollow bolt21 is provided with external threads 26 which engage the threads of theinternally threaded filler plug or wedge nut 16. The hollow pulldownbolt 21 is provided with the hollow body portion 24 to permit electriccables to be inserted up through the tube 19, for use with lamps, etc.

As the bolt 21 is tightened, the tapered end 18 of the tube 19 will betightly drawn down into the tapering aperture 20 of the adaptor ring 12,and the head 25 of the pull-down bolt 21 will be firmly clamped againstthe Washer 22. The washer 22 will in turn be firmly clamped against theinset face 23 of the base or support 10.

It will be obvious by considering Figure 1, that a rigid clamping actionis produced between the cup-shaped washer 22 and the ring 12 against thebase or support 10 as the bolt 21 is tightened in position to lock thetube 19 between the ring 12 and the filler plug or nut 16.

Having described the invention, what is claimed as new A device of theclass described comprising a fiat support having an inset face defininga socket, said inset face having an aperture; an adaptor ring having aportion thereof fitting in said aperture, said ring having a flatabutment shoulder abutting said support adjacent said aperture, athin-walled tube having a tapered end fitting in said ring; a taperingand internally threaded filler plug fitting in said tapered end of thetube for firmly holding said tapered end of said tube in engagement withsaid ring, said ring encircling said tapered end of said tube and fillerplug; a hard-metal cup-washer having a flat support-contacting peripherycontacting the opposite face of said support with respect to said ring,said contacting periphery surrounding said aperture, the cup-washer comprising a flat body spaced from said ring and filler plug and having aninwardly turned right-angular flange which provides said fiatsupport-contacting periphery; and a threaded bolt engaging said fillerplug and having a head abutting said body of said washer and overhangingsaid inwardly turned flange to apply pressure directly over said flangeand for clamping the flange directly against said support and fasteningsaid ring and washer in clamping engagement with said inset face, saidhead of said threaded bolt being wholly inset within said socket tothereby shield said threaded bolt against injury from foreign objects.

References Cited in the file of this patent UNITED STATES PATENTS511,359 Ragoncy Dec. 26, 1893 587,546 Dillenburg Aug. 3, 1897 1,102,079Rizer June 30, 1914 1,696,861 Plimpton Dec. 25, 1928 2,065,902 LevinDec. 29, 1936

